This book is a collection of chapters that delves into key ideas, concepts, practices, and issues related to the teaching and learning of English as a Second Language (ESL), particularly in the Malaysian context. The range of topics include the use of technology in teaching and learning, communication in the ESL classroom, reading in the second language (L2), differentiated instruction in the L2 classroom, language assessment, self-esteem and anxiety among L2 learners, digital technology in language and literacy education, oral corrective feedback, teacher professional development and the Common European Framework of Reference for Languages (CEFR). The content of this book is based on the courses taught in the Bachelor of Education in TESL program at Universiti Putra Malaysia. This book would be bene-ficial to pre-service teachers, educators, researchers and policy makers in the field of TESL. The authors of the chapters in this book are experts in the field of TESL, and have extensive experience as researchers and practitioners in English language education.